Single-wave beam guardrail plate and single-wave beam steel guardrail

Abstract

A waveform beam guardrail plate and a waveform beam steel guardrail are provided. In which, the guardrail plate includes a main body ( 15 ) and two rings ( 16, 17 ) with a same structure installed axial symmetrically on an upper and a lower edges of the main body; furthermore, a transverse section of the main body has an arc shape, and the upper and lower edges of the main body of the guardrail plate are curled inwardly and helically toward a protruding direction of the main body of the guardrail plate for forming the two rings ( 16, 17 ). The waveform beam steel guardrail includes numbers of guardrail plate units ( 1, 11 ), upright posts ( 2 ) and preventing blocks ( 3 ), and the guardrail plate units ( 1, 11 ) are connected with the upright posts ( 2 ) by the preventing blocks ( 3 ).

What is claimed is: 
     
       1. A single-wave beam guardrail plate, comprising a guardrail plate body integrally formed by rolling, and two energy-accumulating rings which have the same structure and are symmetrically disposed in an axial direction at an upper edge and a lower edge of the guardrail plate body, wherein
 a cross section of the guardrail plate body is in the shape of an arc; 
 the two energy-accumulating rings are formed by the upper edge and the lower edge of the guardrail plate body being curled inwardly and spirally toward a convex direction of the guardrail plate body, respectively; 
 each of the two energy-accumulating rings is of a pipe-in-pipe structure in which a first steel pipe is rolled inside a second steel pipe and connected with an inner wall of the second steel pipe, and walls of the first steel pipe and the second steel pipe have a common section near a convex portion of the guardrail plate body; and 
 the single-wave beam guardrail plate comprises a plurality of guardrail plate subunits, and each guardrail plate subunit has the same structure as the single-wave beam guardrail plate. 
 
     
     
       2. The single-wave beam guardrail plate according to  claim 1 , wherein the two energy-accumulating rings comprises a first energy-accumulating ring and a second energy-accumulating ring, a common tangent of an outer circle of the first steel pipe of the first energy-accumulating ring and an outer circle of the first steel pipe of the second energy-accumulating ring is perpendicular to a radius of the guardrail plate body;
 a common tangent of an outer circle of the second steel pipe of the first energy-accumulating ring and an outer circle of the second steel pipe of the second energy-accumulating ring is perpendicular to the radius of the guardrail plate body; 
 a middle point of the common tangent of the outer circle of the second steel pipe of the first energy-accumulating ring and the outer circle of the second steel pipe of the second energy-accumulating ring coincides with a middle point of the arc of the guardrail plate body; 
 a connection line between a center of an inner circle or the outer circle of the first steel pipe of the first energy-accumulating ring and a center of an inner circle or the outer circle of the first steel pipe of the second energy-accumulating ring is perpendicular to the radius of the guardrail plate body; 
 a connection line between the center of the inner circle or the outer circle of the second steel pipe of the first energy-accumulating ring and the center of the inner circle or the outer circle of the second steel pipe of the second energy-accumulating ring is perpendicular to the radius of the guardrail plate body; and 
 in the first energy-accumulating ring or second energy-accumulating ring, an inner circle of the first steel pipe is an inscribed circle of an inner circle of the second steel pipe. 
 
     
     
       3. The single-wave beam guardrail plate according to  claim 2 , wherein in the pipe-in-pipe structure, the radius of the outer circle of the first steel pipe is less than 60% of the radius of the outer circle of the second steel pipe; and
 in the pipe-in-pipe structure, a wire rope or steel strand passes through each first steel pipe in an axial direction such that a prestress is generated in each guardrail plate subunit. 
 
     
     
       4. The single-wave beam guardrail plate according to  claim 2 , wherein in the pipe-in-pipe structure, the radius of the outer circle of the first steel pipe is less than 60% of the radius of the outer circle of the second steel pipe; and
 in the pipe-in-pipe structure, a wire rope or steel strand passes through each first steel pipe in an axial direction such that a prestress is generated in each guardrail plate subunit. 
 
     
     
       5. A single-wave beam steel guardrail using the single-wave beam guardrail plate according to  claim 1 , comprising a plurality of guardrail units sequentially disposed in a transverse direction, in which the plurality of guardrail units are connected by assembling, wherein
 each of the plurality of guardrail units comprises a plurality of posts disposed upright at intervals, a single layer of or a plurality of layers of guardrail plate subunit(s) disposed transversely at the same side of the posts and being perpendicular to the posts, and a plurality of prevention blocks provided between the single layer of or the plurality of layers of guardrail plate subunit(s) and corresponding posts; a structure of each guardrail plate subunit is the same as that of the single-wave beam guardrail plate; 
 the single layer of or the plurality of layers of guardrail plate subunit(s) and corresponding prevention blocks are connected by assembling, and the prevention blocks and corresponding posts are connected by assembling; and 
 the single layer of or the plurality of layers of guardrail plate subunit(s) of each of the plurality of guardrail units and corresponding guardrail plate subunit(s) of adjacent guardrail unit are connected by assembling. 
 
     
     
       6. The single-wave beam steel guardrail according to  claim 5 , wherein assembly plate(s) for connecting adjacent guardrail plate subunits is provided near corresponding posts at the connections between the single layer of or the plurality of layers of guardrail plate subunit(s) of each guardrail unit and corresponding guardrail plate subunit(s) of the adjacent guardrail unit, the assembly plate(s) and corresponding guardrail plate subunit(s) are connected by assembling, and the assembly plate(s) and corresponding prevention block(s) are connected by assembling. 
     
     
       7. The single-wave beam steel guardrail according to  claim 6 , wherein the assembly plate is a connection steel plate. 
     
     
       8. The single-wave beam steel guardrail according to  claim 7 , wherein reinforcing steel pipe(s) is provided in the axial direction in arc groove(s) of the single layer of or the plurality of layers of guardrail plate subunits of each guardrail unit respectively, the reinforcing steel pipe(s) is located between corresponding assembly plate(s) and prevention block(s); and
 each layer of the guardrail plate subunits and corresponding assembly plate, the reinforcing steel pipe are connected by assembling, and each layer of the guardrail plate subunit and corresponding prevention block are connected by assembling. 
 
     
     
       9. The single-wave beam steel guardrail according to  claim 8 , wherein in each guardrail unit, distances between the plurality of layers of guardrail plate subunits and corresponding posts are the same or gradually reduced from the bottom to the top in a vertical direction;
 widths and a thicknesses of the plurality of layers of guardrail plate subunits are the same or gradually increased from the bottom to the top in the vertical direction; 
 diameters of the energy-accumulating rings of the plurality of layers of guardrail plate subunits are the same or gradually increased from the bottom to the top in the vertical direction; and 
 diameters of the reinforcing steel pipes provided correspondingly to the plurality of layers of guardrail plate subunits are the same or gradually reduced from the bottom to the top in the vertical direction. 
 
     
     
       10. The single-wave beam steel guardrail according to  claim 6 , wherein reinforcing steel pipe(s) is provided in the axial direction in arc groove(s) of the single layer of or the plurality of layers of guardrail plate subunits of each guardrail unit respectively, the reinforcing steel pipe(s) is located between corresponding assembly plate(s) and prevention block(s); and
 each layer of the guardrail plate subunits and corresponding assembly plate, the reinforcing steel pipe are connected by assembling, and each layer of the guardrail plate subunit and corresponding prevention block are connected by assembling. 
 
     
     
       11. The single-wave beam steel guardrail according to  claim 10 , wherein in each guardrail unit, distances between the plurality of layers of guardrail plate subunits and corresponding posts are the same or gradually reduced from the bottom to the top in a vertical direction;
 widths and a thicknesses of the plurality of layers of guardrail plate subunits are the same or gradually increased from the bottom to the top in the vertical direction; 
 diameters of the energy-accumulating rings of the plurality of layers of guardrail plate subunits are the same or gradually increased from the bottom to the top in the vertical direction; and 
 diameters of the reinforcing steel pipes provided correspondingly to the plurality of layers of guardrail plate subunits are the same or gradually reduced from the bottom to the top in the vertical direction. 
 
     
     
       12. The single-wave beam steel guardrail according to  claim 5 , wherein reinforcing steel pipe(s) is provided in the axial direction in arc groove(s) of the single layer of or the plurality of layers of guardrail plate subunits of each guardrail unit respectively, the reinforcing steel pipe(s) is located between corresponding assembly plate(s) and prevention block(s); and
 each layer of the guardrail plate subunits and corresponding assembly plate, the reinforcing steel pipe are connected by assembling, and each layer of the guardrail plate subunit and corresponding prevention block are connected by assembling. 
 
     
     
       13. The single-wave beam steel guardrail according to  claim 12 , wherein in each guardrail unit, distances between the plurality of layers of guardrail plate subunits and corresponding posts are the same or gradually reduced from the bottom to the top in a vertical direction;
 widths and a thicknesses of the plurality of layers of guardrail plate subunits are the same or gradually increased from the bottom to the top in the vertical direction; 
 diameters of the energy-accumulating rings of the plurality of layers of guardrail plate subunits are the same or gradually increased from the bottom to the top in the vertical direction; and 
 diameters of the reinforcing steel pipes provided correspondingly to the plurality of layers of guardrail plate subunits are the same or gradually reduced from the bottom to the top in the vertical direction. 
 
     
     
       14. The single-wave beam steel guardrail according to  claim 5 , wherein in the single-layer of or the plurality of layers of guardrail plate subunits, each layer of guardrail plate subunit include single-side guardrail plate subunit or double-side guardrail plate subunit;
 a structure of the single-side guardrail plate subunit is the same as that of the single-wave beam guardrail plate, and the double-side guardrail plate subunit is formed by oppositely assembling two single-wave beam guardrail plates together; and 
 in the double-side guardrail plate subunit, the arc convex portions of the guardrail plate bodies of the two single-wave beam guardrail plates are disposed oppositely, and the guardrail plate bodies thereof are connected by assembling.